I have been to Excelsior on many occasion.Last time was 8 months back.
They are the best in bangkok. I have tried many tailors before but have never been completely satisfied like this.Just ordered them 3 suits for my new job from them and looking forward for it.
Thailand got lots of tailors and would recommend people to go to the tailor shops rather than buying off the rack since there are over 4000 swatches and collection a person can chose from and the price and quality and fit much more reasonable.
They have made suits for many famous people like those of the lord of the rings team and many local politicians.
A middle range quality suit run about 220 dollars at Excelsior but they have many range of quality.
Keep them in mind.
Cheers,
walterlee